_______________ may occur because of mistakes made when DNA copies itself during cell divisions or because of environmental factors such as ultraviolet radiation from the sun
a. Mutations
b. Noncoding DNA
c. Epigenetics
d. Twins
Answer: a
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Natalie is a good student and likes to participate in class. When she was in the third grade, she had a hard time not blurting out answers. She wanted to answer every question. Now that she is in the 10th grade, she is better at controlling her behavior and only raises her hand once or twice each class. Natalie has experienced an advance in ______.
A. metacognition B. selective attention C. response inhibition D. working memory
When did the human population reach 500 million people?
a. 400 years ago b. 1,000 years ago c. 4,000 years ago d. 10,000 years ago
From an evolutionary perspective, it is believed that the human species originated in ____
a. the forests and plateaus of South America b. the plains and lowlands of North America c. the grasslands and forests of Africa d. the tundra and deciduous forests of the Arctic
School-age children with a history of __________ have more complex, favorable, and coherent self-concepts
A) elaborative parent–child conversations about past experiences B) authoritarian parent–child interactions C) permissive parent–child interactions D) routine parent–child conversations about current events